CVE-2025-20630

Mobile crash via object that can't be cast to String in Attachment Field

Description

Mattermost Mobile versions <=2.22.0 fail to properly handle posts with attachments containing fields that cannot be cast to a String, which allows an attacker to cause the mobile to crash via creating and sending such a post to a channel.

Remediation

Solution:

  • Update Mattermost Mobile to version 2.23.0 or higher.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.11%
Affected: Mattermost Mattermost
Published at:
Updated at:

References

Link Tags
https://mattermost.com/security-updates

Frequently Asked Questions

What is the severity of CVE-2025-20630?
CVE-2025-20630 has been scored as a medium severity vulnerability.
How to fix CVE-2025-20630?
To fix CVE-2025-20630: Update Mattermost Mobile to version 2.23.0 or higher.
Is CVE-2025-20630 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-20630 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-20630?
CVE-2025-20630 affects Mattermost Mattermost.
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